203031232011 has 12 divisors (see below), whose sum is σ = 302727572160. Its totient is φ = 130987891440.

The previous prime is 203031231989. The next prime is 203031232013. The reversal of 203031232011 is 110232130302.

203031232011 is a `hidden beast` number, since 2 + 0 + 30 + 312 + 320 + 1 + 1 = 666.

It is not a de Polignac number, because 203031232011 - 2²¹ = 203029134859 is a prime.

It is a super-2 number, since 2×203031232011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203031232013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 363854976 + ... + 363855533.

It is an arithmetic number, because the mean of its divisors is an integer number (25227297680).

Almost surely, 2^203031232011 is an apocalyptic number.

203031232011 is a deficient number, since it is larger than the sum of its proper divisors (99696340149).

203031232011 is a wasteful number, since it uses less digits than its factorization.

203031232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727710546 (or 727710543 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 203031232011 its reverse (110232130302), we get a palindrome (313263362313).

The spelling of 203031232011 in words is "two hundred three billion, thirty-one million, two hundred thirty-two thousand, eleven".